The Bwindi Impenetrable Forest is old, complex, and biologically rich. one of the few large tracts of East African forest where this occurs. Bwindi Impenetrable National Park is important for the conservation of the afromontane fauna, especially species endemic to the
Western Rift Valley's mountains. and more than 45 are small mammals.
Mountain gorillas eating a root in the park Bwindi Impenetrable National Park hosts a population of the
mountain gorilla (
Gorilla beringei beringei), known as the Bwindi population, which makes up almost half of all the mountain gorillas in the world. to 320 individuals in 2002 to 340 individuals in 2006. A census conducted in 2018 estimated that there were 36 social groups with a total of 459 mountain gorillas, as well as an additional 16 solitary individuals living in Bwindi.
Poaching, disease and habitat loss are the greatest threat to the gorillas. The Bwindi mountain gorillas have been proposed by
Craig Stanford as a separate, as yet unnamed subspecies of
Gorilla beringei. The mountain gorilla is an endangered species, with an estimated total population of about 650 individuals. There are no mountain gorillas in captivity, but during the 1960s and 1970s, some were captured to start captive breeding. == Conservation ==